  /* 局部样式：发帖页面专用 */
  body, html {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: 'KaiTi', serif;
    background: var(--main-bg-color, #f5f5f5);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 40px;
  }

  .post-container {
    background: white;
    width: 100%;
    max-width: 600px;
    border-radius: 8px;
    padding: 20px 30px 30px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  }

  h2 {
    margin-bottom: 24px;
    color: var(--primary-color-end, #0d47a1);
    text-align: center;
  }

  .input-group {
    margin-bottom: 16px;
    position: relative;
  }

  .input-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: bold;
    color: #333;
  }

  .input-group input[type="text"],
  .input-group textarea {
    width: 100%;
    padding: 12px 15px;
    font-size: 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    resize: vertical;
    transition: border-color 0.3s ease;
  }

  .input-group input[type="text"]:focus,
  .input-group textarea:focus {
    outline: none;
    border-color: var(--primary-color-start, #1a73e8);
  }

  textarea {
    min-height: 120px;
    line-height: 1.4;
  }

  button#submit-post {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color-start, #1a73e8), var(--primary-color-end, #0d47a1));
    color: white;
    border: none;
    padding: 14px;
    font-size: 16px;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    transition: background-color 0.3s ease;
  }

  button#submit-post:hover {
    background: linear-gradient(135deg, #155ab7, #0a3570);
  }